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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 16 — Aug. 15, 2012
  • pp: 3363–3365

Temporal contrast enhancement of petawatt-class laser pulses

Hiromitsu Kiriyama, Takuya Shimomura, Hajime Sasao, Yoshiki Nakai, Manabu Tanoue, Shuji Kondo, Shuhei Kanazawa, Alexander S. Pirozhkov, Michiaki Mori, Yuji Fukuda, Mamiko Nishiuchi, Masaki Kando, Sergei V. Bulanov, Keisuke Nagashima, Mitsuru Yamagiwa, Kiminori Kondo, Akira Sugiyama, Paul R. Bolton, T. Tajima, and Noriaki Miyanaga  »View Author Affiliations


Optics Letters, Vol. 37, Issue 16, pp. 3363-3365 (2012)
http://dx.doi.org/10.1364/OL.37.003363


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Abstract

We demonstrate the temporal contrast enhancement in a petawatt-class Ti:sapphire chirped-pulse amplification (CPA) laser system. An extra saturable absorber, introduced downstream after a low-gain optical parametric chirped-pulse amplification (OPCPA) preamplifier, has improved the temporal contrast in the system to 1.4×1012 on the subnanosecond time scale at 70 TW power level. We have achieved 28 J of uncompressed broadband output energy with this system, indicating the potential for reaching peak powers near 600 TW.

© 2012 Optical Society of America

OCIS Codes
(140.3280) Lasers and laser optics : Laser amplifiers
(170.7160) Medical optics and biotechnology : Ultrafast technology
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(320.7090) Ultrafast optics : Ultrafast lasers
(230.4480) Optical devices : Optical amplifiers

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: May 15, 2012
Revised Manuscript: June 22, 2012
Manuscript Accepted: June 22, 2012
Published: August 6, 2012

Citation
Hiromitsu Kiriyama, Takuya Shimomura, Hajime Sasao, Yoshiki Nakai, Manabu Tanoue, Shuji Kondo, Shuhei Kanazawa, Alexander S. Pirozhkov, Michiaki Mori, Yuji Fukuda, Mamiko Nishiuchi, Masaki Kando, Sergei V. Bulanov, Keisuke Nagashima, Mitsuru Yamagiwa, Kiminori Kondo, Akira Sugiyama, Paul R. Bolton, T. Tajima, and Noriaki Miyanaga, "Temporal contrast enhancement of petawatt-class laser pulses," Opt. Lett. 37, 3363-3365 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-16-3363

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